Swine flu (H1N1) is a type of viral infection. It’s called swine flu because it resembles a respiratory infection that pigs can get. In 2009, an H1N1 pandemic infected millions of people worldwide. You can treat it with rest, fluids and antiviral medications.

2023年3月23日 · During the 2009-10 flu season, a new H1N1 virus began causing illness in humans. It was often called swine flu and was a new combination of influenza viruses that infect pigs, birds and humans.

2023年5月16日 · H1N1 flu is also known as swine flu. It's called swine flu because in the past, the people who caught it had direct contact with pigs. That changed several years ago, when a …

Influenza A virus subtype H1N1 (A/H1N1) is a subtype of influenza A virus (IAV). Some human-adapted strains of H1N1 are endemic in humans and are one cause of seasonal influenza (flu). [1] Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). [2]

2019年6月11日 · Since the 2009 H1N1 pandemic, the (H1N1)pdm09 flu virus has circulated seasonally in the U.S. causing significant illnesses, hospitalizations, and deaths. Additionally, CDC estimated that 151,700-575,400 people worldwide died from (H1N1)pdm09 virus infection during the first year the virus circulated.**

Before the H1N1 pandemic in 2009, the influenza A (H1N1) virus had never been identified as a cause of infections in people. Genetic analyses of this virus have shown that it originated from animal influenza viruses and is unrelated to the human seasonal H1N1 viruses that have been in general circulation among people since 1977.

所谓“H1N1”是病毒名称的缩写，其“H”指的是血球凝集素（Hemagglutinin）、而“N”指的是神经氨酸酶（Neuraminidase），两种都是病毒上的抗原名称。 其意思是：具有“血球凝集素（Hemagglutinin）第1型、神经氨酸酶（Neuraminidase）第1型”的病毒。 血球凝集素共有1～16型，神经氨酸酶共有1～9型。 与H1N1同一系列的还有 H5N1，H7N2，H1N7，H7N3，H13N6，H5N9，H11N6， H3N8，H9N2， …

2024年9月2日 · In 1918, the H1N1 influenza virus, commonly known as the Spanish flu, sparked a devastating pandemic that infected roughly 500 million individuals worldwide and led to the deaths of an estimated 50 to 100 million people, accounting for 3% to 5% of the global population at the time. This made it one of the deadliest pandemics in human history.

Persons infected with H1N1 experienced fever and mild respiratory symptoms, such as coughing, runny nose, and congestion. In some cases symptoms were severe and included diarrhea, chills, and vomiting, and in rare cases respiratory failure occurred. The H1N1 virus caused relatively few deaths in humans.

2019年7月31日 · In 2009 a strain of swine flu called H1N1 infected many people around the world. The virus is contagious and can spread from human to human. Symptoms of swine flu in people are similar to the symptoms of regular human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue.